Extension ladder shelf



FIG. 1 is a perspective view of an extension ladder shelf showing my new design;

FIG. 2 is a side elevation taken generally from the lower right quadrant of FIG. 1, which elevation is a reverse mirror image of an elevation taken generally from the upper left quadrant of FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation taken generally from the lower left quadrant of FIG. 1.;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a back elevation taken generally from the upper right quadrant of FIG. 1. 

The ornamental design for an extension ladder shelf, as shown and described. 